Farabead® Electrically Conductive Au Particles
Nano-Micro provides high quality Farabead® gold-plated particles for microelectronic packaging in electronics manufacturing. With increasing resolutions and decreasing number of circuit chips or modules in liquid-crystal displays (LCD), the input/output (I/O) density in integrated circuit increases while the size and pitch of the interconnection bumps are becoming very small. Farabead® Au particles are electrically conductive and typically dispersed in a binder to form anisotropic conductive adhesive (ACA) materials such as anisotropic conductive film (ACF) or anisotropic conductive paste (ACP) employed in the connection of microelectrodes. Farabead® Au conductive particles have outstanding size uniformity, high conductivity, appropriate elasticity and strong adhesion between the metal layer and the resin core. Designed specifically for vertical connection of fine-pitch electrodes, Farabead® Au conductive particles are used, for example, in the interconnect between the two glass panels in the fabrication of LCD cells.

Characteristics
Monodisperse resin particles as core and metallic gold as shell
◆ Broad size selection: 3.0 µm − 10.0 µm (in 0.1 µm increment)
◆ Uniform in size and shape, coefficient of variation (CV) ≤ 3.5%
◆ Good dispersivity, no overlaps or aggregates
◆ Suitable hardness for high conduction reliability
◆ Low resistance, high stability under heat and humidity

Optical and SEM micrographs of Farabead® Au particles
Farabead® Au
Product
|
Diameter
|
Increment
|
CV
|
K at 10% deformation*
|
Metal thickness
|
Metal content
|
Application
|
GD
|
7.00–10.00
|
0.25
|
≤3.5%
|
~450
|
100–150
|
25–35
|
LCD 边框
|
3.00–6.75
|
0.25
|
≤3.5%
|
~500
|
100–150
|
30–40
|
GDL
|
7.00–10.00
|
0.25
|
≤3.5%
|
~250
|
100–150
|
25–35
|
ACF,ACP
|
3.00–6.75
|
0.25
|
≤3.5%
|
~300
|
100–150
|
30–40
|
* The K value at 10% deformation is defined by the following equation:

wherein F and S represent a load value (kgf) and a compression displacement (mm) at 10% compression deformation of the particle, respectively, and R represents a radius (mm) of the particle.
bio-equip.cn
Nano-Micro Tech is devoted to developing a world-leading technology for making the highest quality and the largest selection of uniformly sized nano- and microparticles. The company is capable of supplying monodisperse particles of any size in the range from 5 nanometers to 1000 microns. Current products include high performance chromatographic media and columns, solid phase extraction (SPE) sorbents, metal scavenger resins, LCD spacer, particle size standards, enzyme support, drug carriers, ACF conductive particles, magnetic particles, fluorescent microspheres, light diffuser particles, cosmetic additive particles and various functional microparticles for other applications.
The company has a 3500 square meter manufacturing plant and 3000 square meter R&D lab in Suzhou Industrial Park. Microparticles from Nano-Micro Tech have already been broadly used worldwide in biopharmaceuticals, nano and microparticle calibration standards, LED, medical diagnosis, flat panel displays, enzyme catalysis, cosmetics, etc.
Nano-Micro Tech is a state certified New and High Technology Enterprise, and SGS ISO9001:2008 registered company.